US3842640A - Guiding means for piercing mill - Google Patents

Guiding means for piercing mill Download PDF

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Publication number
US3842640A
US3842640A US00337989A US33798973A US3842640A US 3842640 A US3842640 A US 3842640A US 00337989 A US00337989 A US 00337989A US 33798973 A US33798973 A US 33798973A US 3842640 A US3842640 A US 3842640A
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US
United States
Prior art keywords
arbor
disc
supporting
workpiece
cylinder assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00337989A
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English (en)
Inventor
P Schmitt
M Hien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wean United Inc
Original Assignee
Wean United Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19722219894 external-priority patent/DE2219894C3/de
Application filed by Wean United Inc filed Critical Wean United Inc
Application granted granted Critical
Publication of US3842640A publication Critical patent/US3842640A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers

Definitions

  • ABSTRACT i The disclosure of this invention relates to guiding de- [30] Foreign Applicatmn Priomy Dam vices for use with a piercing mill and, more particu Apr. 19, 1972 Germany 2219894 l rly t wh t i referred to as discs
  • the lug. tration of the invention discloses an arbor for each UsS- Cldisc received in a eparate housing the guid disc being carried extending portions of their [581 held of Search 403/31, 261; 72/250, 238, arbors.
  • Piston cylinder assemblies are connected to 72/239 247; 279/245, 4 the extending portions of the arbors for creating a force for causing a forcible contact between the discs References Cited and arbors and allowing wedges to be inserted be- UNITED STATES PATENTS tween the piston rods and spacer elements arranged to 1,784,791 12/1930 Gruber 72/250 Contact the diSCS-
  • the arbors are rotated y gear trains 2,645,955 7/1953 Friedman 72/28 in a ti n to eing axially adjusted by worm wheel 2,866,370 12/1958 Biach 81/54 sets. 2,950,934 8/1960 Uebingmn.
  • the invention relates to two roll piercing mills for the production of tubes having heavy over-hung, driven guide discs in the housings of the mills.
  • this invention pertains to an improved design of the guiding'devices with the object of decreasing the downtime due to tool change.
  • this invention provides an improved guiding means for a piercing mill of the above-described nature having the following objects:
  • the guiding means includes an arbor located in a fixed housing at the roll stand, forming with the guide disc and a power means, for example, piston cylinder assembly, a separate unit which unit is axially displaceable, and wherein An extension of the arbor for the guide disc is separately connected to the cylinder assembly through the piston rod thereof, whereby through a wedged coupling a controllable, restrained operating connection is obtained, and further wherein 0.
  • the cylinder assembly is usable as a device for guide disc changing and remains an integral part with the unit during operation after the necessary fluid supply lines have been disconnected.
  • FIG. 1 is a longitudinal section through a guide disc constructed in accordance with the present invention
  • FIG. 2 is a section view along line A-B in FIG. 1
  • FIG. 3 is a section view along line C-D in FIG. 1
  • FIG. 4 is an elevational view, partly in section, of the guide disc in a partly disassembled condition.
  • FIG. 1 one of an identical pair of guiding devices for a mill will be described, in which located on an arbor 2 that is provided with a shoulder l are bearing 3, spacer 4, spur gear 5, spacer 6, and a second bearing 7 retained through an end plate 8; arranged to form an assembled unit with an adjustable sleeve 9 that .2 is provided with threaded section 10 and retains bearing 7 without axial play.
  • the bearing 3 and adjustable sleeve 9 are located in a fixed housing 11 with a sliding fit, in which key 12, located in the adjustable sleeve 9, engages a cone sponding keyslot 13 in housing 11; thus preventing rotational displacement of part 9 to part 11.
  • the internal thread 16 is engaged with threaded shaft 10 of the adjustable sleeve 9. The entire assembly is rotated about an axis arranged parallel to the broken line in FIG. 1 from an operative to an inoperative position relative to the mill passline.
  • the portion of arbor 2 extending outside the housing 11 is provided with a key 19 and supports a guide disc 21 which is provided with a key slot 20.
  • the disc is firmly held against a spacer 22 and against the arbor shoulder 1 by a wedge 23.
  • the arbor 2 is connected to a piston rod 26 of a double-acting piston cylinder assembly 27 through an opening 24 (FIG. 3) and T-section 25 0s the piston rod (bayonet joint) while cylinder 27 is firmly mounted to a retainer 28 which is shaped to allow for quick-connect (bayonet joint) with part 22 as shown in FIG. 2.
  • the unit consisting of the guide disc 21, spacer 22, retainer 28, and cylinder 27 is lowered with the aid of a crane hook and lifting lug 29 onto the arbor 2; whereby the T-section 25 in the position shown in FIG. 4, is inserted into opening 24 of the arbor 2, and the guide disc 21 registers againstshoulder 1.
  • a tool is inserted through one of the openings 30 of the spacer 22 into hole 31 of the piston rod 26 and the rod is turned by into the operating position as shown in FIG. 1.
  • Fluid under pressure is now introduced through cylinder port 32 putting the piston rod 26, that is connected to the arbor 2, under a predetermined tension, which makes it possible to insert the wedge 23 without effort.
  • this tension results in preloading the wedged connection and locking the guide disc 21 between the shoulder 1 and the spacer 22. After disconnecting the supply line from port 32, the unit is ready for operation.
  • the preload is released by pressure being supplied at port 32, the wedge is removed and, if required, in removing the disc from the arbor 2 pressure may be supplied to port 33 to break any resistance to movement between the chock and arbor.
  • the provided axial adjustment of the guide disc 21 with reference to the product 34 in process of being pierced occurs in the illustrated example through a rotation of the worm gear nut 17 by the worm 35, displacing the adjusting sleeve 9 axially with the aid of the key 12
  • the drive components of the disc 21 may be of conventional design, as, for instance, through a pinion 36.
  • the width of the gear 5 and pinion 36 is sufficient to allow the required adjustment of the disc and yet maintain a proper driving relationship with each other.
  • a power means having a first portion connectable to said extending portion of said arbor arranged to urge said disc into forcible contact with said arbor in a first direction coaxial to the axis of said arbor, and a second portion for applying a force to said arbor in a direction opposite said first direction and coaxial to the axis of said arbor to thereby forceably hold said disk in its operative position
  • a restraining means having surfaces engageable with said power means and said disc for holding said disc against said arbor after said power means has established said forcible contact and its power has been discontinued.
  • said power means includes a piston cylinder assembly, the piston rod of which is connectable to said extending portion of said arbor,
  • said piston cylinder assembly having a first port for causing said forcible contact between said disc and arbor, and a second port for tending to cause relative movement between said disc and arbor, and
  • said restraining means includes a wedge constructed to engage said piston rod and a spacer element arranged to contact said guide disc.
  • said drive means causing rotation of said sleeve.
  • a bayonet type connecting means for connecting said cylinder to said spacer.
  • said cylinder of said piston cylinder assembly includes a lug by which said piston cylinder assembly can be brought to and removed from said workpiece guide disc.
  • a workpiece guiding means for a piercing mill including a guide disc for engaging the workpiece during the piercing operation
  • a portable power means having a portion quickly connectable to and from said supporting means for applying a force in a first direction coaxial of said supporting means and a second portion for applying a force in an axial direction opposite said first direction,
  • a workpiece guiding means according to claim 7 wherein one of said opposed surfaces is formed by a supporting arbor of said supporting means and the other opposed surface is formed by a spacer element carried by said guide disc, and
  • said power means includes a piston cylinder assembly having means for connecting its rod end to said arbor to establish said forcible hold of said disc, and
  • a housing for supporting said arbor, disc, spacer element and piston cylinder assembly in a manner that these elements are movable as a unit during said adjustment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Actuator (AREA)
  • Automatic Assembly (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US00337989A 1972-04-19 1973-03-05 Guiding means for piercing mill Expired - Lifetime US3842640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722219894 DE2219894C3 (de) 1972-04-19 Zweiwalzenschräg walzwerk

Publications (1)

Publication Number Publication Date
US3842640A true US3842640A (en) 1974-10-22

Family

ID=5843003

Family Applications (1)

Application Number Title Priority Date Filing Date
US00337989A Expired - Lifetime US3842640A (en) 1972-04-19 1973-03-05 Guiding means for piercing mill

Country Status (4)

Country Link
US (1) US3842640A (enExample)
CA (1) CA977998A (enExample)
FR (1) FR2180927B1 (enExample)
GB (1) GB1423533A (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871222A (en) * 1973-05-11 1975-03-18 Kieserling & Albrecht Metal rolling apparatus with exchangeable rolls
US3945235A (en) * 1974-03-08 1976-03-23 British Steel Corporation Apparatus for applying a tensile load to a hollow shaft
US3973425A (en) * 1974-11-07 1976-08-10 Morgan Construction Company Axial preloading device for axially adjustable grooved work rolls
US3985013A (en) * 1974-08-16 1976-10-12 Moeller & Neumann Gmbh Apparatus for rapidly changing straightening rollers of a roller straightening machine
US4117705A (en) * 1977-08-08 1978-10-03 Asko, Inc. Work reducing and pressure applying

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871222A (en) * 1973-05-11 1975-03-18 Kieserling & Albrecht Metal rolling apparatus with exchangeable rolls
US3945235A (en) * 1974-03-08 1976-03-23 British Steel Corporation Apparatus for applying a tensile load to a hollow shaft
US3985013A (en) * 1974-08-16 1976-10-12 Moeller & Neumann Gmbh Apparatus for rapidly changing straightening rollers of a roller straightening machine
US3973425A (en) * 1974-11-07 1976-08-10 Morgan Construction Company Axial preloading device for axially adjustable grooved work rolls
US4117705A (en) * 1977-08-08 1978-10-03 Asko, Inc. Work reducing and pressure applying

Also Published As

Publication number Publication date
GB1423533A (en) 1976-02-04
DE2219894A1 (de) 1973-10-31
FR2180927A1 (enExample) 1973-11-30
DE2219894B2 (de) 1975-11-20
CA977998A (en) 1975-11-18
FR2180927B1 (enExample) 1977-12-30

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